A mother substrate for a display device includes a display cell, a test pad, an electrostatic preventing pattern and a connecting line. The display cell includes a pad and a signal line. The signal line is extended from the pad and is electrically connected to a pixel. The test pad is disposed out of the display cell and is electrically connected to the signal line of the display cell and receives a test signal. The electrostatic preventing pattern electrically connected to the test pad is disposed adjacent to the test pad and includes a plurality of edges. The electrostatic preventing pattern is formed from a metal pattern. The connecting line is extended from the electrostatic preventing pattern and is electrically connected to the pad of the display cell.
Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A substrate for a display device, the substrate comprising: a display cell including a display cell pad and a signal line, the signal line extending from the display cell pad and being electrically connected to a pixel; a test pad portion, distinct from the display cell pad, projecting from the display cell, electrically connected to the signal line of the display cell and receiving a test signal for detecting an error in the signal lines, the test pad portion comprising at least one data testing pad for detecting an error in data lines of the display cell, at least one gate testing pad for detecting an error in gate lines of the display cell, and a storage testing pad for detecting an error in storage lines of the display cell; an electrostatic preventing pattern, configured to decrease a level of accumulated electrical charge from the test pad portion, electrically connected to the test pad portion, disposed adjacent to the test pad portion, including a plurality of edges and formed from a metal pattern; a connecting line extended from the electrostatic preventing pattern and electrically connected to the display cell pad; a connecting line portion including the connecting line and the electrostatic preventing pattern; and a connecting portion which electrically connects an end portion of the test pad portion to an end portion of the connecting line portion using a transparent electrode pattern.
The display device substrate includes a display cell with a pad and a signal line connected to a pixel. A separate test pad, extending from the display cell, connects to the signal line for error detection in data, gate, and storage lines. An electrostatic discharge (ESD) prevention pattern, made of metal with multiple edges, is near the test pad to reduce static charge. A connecting line links the ESD pattern to the display cell pad. The ESD pattern and connecting line form a connection section. A transparent electrode connects the test pad end to the connection section end. This protects the circuit and allows testing.
2. The substrate of claim 1 , wherein the electrostatic preventing pattern has a zigzag shape.
The display device substrate from the previous description includes an electrostatic discharge (ESD) prevention pattern that has a zigzag shape. The display device substrate includes a display cell with a pad and a signal line connected to a pixel. A separate test pad, extending from the display cell, connects to the signal line for error detection in data, gate, and storage lines. An electrostatic discharge (ESD) prevention pattern, made of metal with multiple edges, is near the test pad to reduce static charge. A connecting line links the ESD pattern to the display cell pad. The ESD pattern and connecting line form a connection section. A transparent electrode connects the test pad end to the connection section end. This protects the circuit and allows testing.
3. The substrate of claim 1 , wherein the electrostatic preventing pattern includes one or more first portions and one or more second portions with the first portions having a first width and the second portions having a second width narrower than the first width.
The display device substrate includes an electrostatic discharge (ESD) prevention pattern with varying widths. It includes one or more first portions having a first width and one or more second portions having a second width narrower than the first width. The display device substrate includes a display cell with a pad and a signal line connected to a pixel. A separate test pad, extending from the display cell, connects to the signal line for error detection in data, gate, and storage lines. An electrostatic discharge (ESD) prevention pattern, made of metal with multiple edges, is near the test pad to reduce static charge. A connecting line links the ESD pattern to the display cell pad. The ESD pattern and connecting line form a connection section. A transparent electrode connects the test pad end to the connection section end. This protects the circuit and allows testing.
4. The substrate of claim 3 , wherein the electrostatic preventing pattern includes a pattern of alternating the first and second portions.
The display device substrate from the previous description features an electrostatic discharge (ESD) prevention pattern that alternates between wider and narrower sections, with one or more first portions having a first width and one or more second portions having a second width narrower than the first width. The display device substrate includes a display cell with a pad and a signal line connected to a pixel. A separate test pad, extending from the display cell, connects to the signal line for error detection in data, gate, and storage lines. An electrostatic discharge (ESD) prevention pattern, made of metal with multiple edges, is near the test pad to reduce static charge. A connecting line links the ESD pattern to the display cell pad. The ESD pattern and connecting line form a connection section. A transparent electrode connects the test pad end to the connection section end. This protects the circuit and allows testing.
5. The substrate of claim 3 , wherein the first width is in a range of between about 30 μm and about 50 μm, and the second width is in a range of between about 5 μm and about 15 μm.
The display device substrate from the description of an electrostatic discharge (ESD) prevention pattern with alternating widths. The wider sections (first portions) range from 30 to 50 micrometers, and the narrower sections (second portions) range from 5 to 15 micrometers. The ESD prevention pattern has varying widths. It includes one or more first portions having a first width and one or more second portions having a second width narrower than the first width. The display device substrate includes a display cell with a pad and a signal line connected to a pixel. A separate test pad, extending from the display cell, connects to the signal line for error detection in data, gate, and storage lines. An electrostatic discharge (ESD) prevention pattern, made of metal with multiple edges, is near the test pad to reduce static charge. A connecting line links the ESD pattern to the display cell pad. The ESD pattern and connecting line form a connection section. A transparent electrode connects the test pad end to the connection section end. This protects the circuit and allows testing.
6. The substrate of claim 3 , wherein the second width is less than or equal to half of the first width.
The display device substrate includes an electrostatic discharge (ESD) prevention pattern where the narrower sections are half the width or less of the wider sections. The ESD prevention pattern has varying widths. It includes one or more first portions having a first width and one or more second portions having a second width narrower than the first width. The display device substrate includes a display cell with a pad and a signal line connected to a pixel. A separate test pad, extending from the display cell, connects to the signal line for error detection in data, gate, and storage lines. An electrostatic discharge (ESD) prevention pattern, made of metal with multiple edges, is near the test pad to reduce static charge. A connecting line links the ESD pattern to the display cell pad. The ESD pattern and connecting line form a connection section. A transparent electrode connects the test pad end to the connection section end. This protects the circuit and allows testing.
7. The substrate of claim 1 , wherein the electrostatic preventing pattern comprises: a first electrostatic preventing pattern having a zigzag shape including a plurality of edges; and a second electrostatic preventing pattern including an alternating pattern of one or more first portions having a first width and one or more second portions having a second width narrower than the first width.
The display device substrate features an electrostatic discharge (ESD) prevention pattern that combines a zigzag shape with alternating widths. The first ESD prevention pattern has a zigzag shape including a plurality of edges. A second ESD prevention pattern includes an alternating pattern of one or more first portions having a first width and one or more second portions having a second width narrower than the first width. The display device substrate includes a display cell with a pad and a signal line connected to a pixel. A separate test pad, extending from the display cell, connects to the signal line for error detection in data, gate, and storage lines. An electrostatic discharge (ESD) prevention pattern, made of metal with multiple edges, is near the test pad to reduce static charge. A connecting line links the ESD pattern to the display cell pad. The ESD pattern and connecting line form a connection section. A transparent electrode connects the test pad end to the connection section end. This protects the circuit and allows testing.
8. A substrate for a display device, the substrate comprising: a display cell including a display cell pad and a signal line, the signal line extending from the display cell pad and being electrically connected to a pixel; a test pad portion, distinct from the display cell pad, projecting from the display cell, electrically connected to the signal line of the display cell and receiving a test signal for detecting an error in the signal lines, the test pad portion comprising at least one data testing pad for detecting an error in data lines of the display cell, at least one gate testing pad for detecting an error in gate lines of the display cell, and a storage testing pad for detecting an error in storage lines of the display cell; an electrostatic preventing pattern electrically connected to the test pad portion, disposed adjacent to the test pad portion, including a plurality of edges and formed from a metal pattern; a connecting line extended from the electrostatic preventing pattern and electrically connected to the display cell pad; and a connecting portion electrically connecting the test pad portion to a connecting line portion including the connecting line and the electrostatic preventing pattern, wherein the connecting portion electrically connects an end portion of the test pad portion to an end portion of the connecting line portion spaced apart from the end portion of the test pad portion using a transparent electrode pattern.
The display device substrate includes a display cell with a pad and signal line connected to a pixel. A separate test pad extends from the display cell and connects to the signal line for error detection in data, gate, and storage lines. An electrostatic discharge (ESD) prevention pattern, made of metal with multiple edges, is near the test pad to reduce static charge. A connecting line links the ESD pattern to the display cell pad. A transparent electrode connects the test pad to the connecting line section, where the electrode links the test pad end to the connecting line section end at a distance. This protects the circuit and allows testing.
9. The substrate of claim 8 , wherein the test pad portion includes a first pad electrode, a first contact hole formed on the first pad electrode and a second pad electrode connected to the first pad electrode through the first contact hole.
The display device substrate from the previous description includes a test pad made of a first pad electrode, a contact hole on the first pad electrode, and a second pad electrode connected through the contact hole. The display device substrate includes a display cell with a pad and signal line connected to a pixel. A separate test pad extends from the display cell and connects to the signal line for error detection in data, gate, and storage lines. An electrostatic discharge (ESD) prevention pattern, made of metal with multiple edges, is near the test pad to reduce static charge. A connecting line links the ESD pattern to the display cell pad. A transparent electrode connects the test pad to the connecting line section, where the electrode links the test pad end to the connecting line section end at a distance. This protects the circuit and allows testing.
10. The substrate of claim 9 , wherein the first pad electrode comprises a metal, and the second pad electrode comprises a transparent conductor.
This invention relates to a substrate for electronic devices, particularly those requiring both conductive and transparent electrode structures. The problem addressed is the need for a substrate that integrates a metal electrode for high conductivity and a transparent conductor electrode for optical applications, such as in displays or sensors, without compromising performance. The substrate includes a base layer with at least two distinct electrode regions. The first electrode region is a metal pad, providing excellent electrical conductivity for signal transmission or power distribution. The second electrode region is a transparent conductor pad, allowing light to pass through while maintaining electrical functionality. The transparent conductor may be a material like indium tin oxide (ITO) or a conductive polymer, ensuring optical transparency in applications where visibility is critical. The metal pad and transparent conductor pad are positioned on the same substrate, enabling hybrid functionality in a single device. This design is useful in applications such as touchscreens, solar cells, or flexible electronics, where both high conductivity and optical transparency are required. The substrate may also include additional layers or coatings to enhance adhesion, durability, or electrical properties. The combination of metal and transparent conductor electrodes allows for efficient signal routing while maintaining optical clarity in the active areas of the device.
11. The substrate of claim 9 , wherein the transparent electrode pattern includes a pixel electrode electrically connected to the transistor and the second pad electrode of the test pad portion electrically connected to the first pad electrode.
In the display device substrate, with a test pad consisting of a first and second pad electrode connected by a contact hole, the transparent electrode also serves as the pixel electrode. The transparent electrode pattern connects the pixel electrode (electrically connected to the transistor) to the second pad electrode (electrically connected to the first pad electrode) in the test pad. The display device substrate includes a display cell with a pad and signal line connected to a pixel. A separate test pad extends from the display cell and connects to the signal line for error detection in data, gate, and storage lines. An electrostatic discharge (ESD) prevention pattern, made of metal with multiple edges, is near the test pad to reduce static charge. A connecting line links the ESD pattern to the display cell pad. A transparent electrode connects the test pad to the connecting line section, where the electrode links the test pad end to the connecting line section end at a distance. This protects the circuit and allows testing.
12. The substrate of claim 8 , wherein the electrostatic preventing pattern includes one or more first portions and one or more second portions with the first portions having a first width and the second portions having a second width narrower than the first width.
The display device substrate includes an electrostatic discharge (ESD) prevention pattern that has varying widths. The electrostatic discharge (ESD) prevention pattern includes one or more first portions having a first width and one or more second portions having a second width narrower than the first width. The display device substrate includes a display cell with a pad and signal line connected to a pixel. A separate test pad extends from the display cell and connects to the signal line for error detection in data, gate, and storage lines. An electrostatic discharge (ESD) prevention pattern, made of metal with multiple edges, is near the test pad to reduce static charge. A connecting line links the ESD pattern to the display cell pad. A transparent electrode connects the test pad to the connecting line section, where the electrode links the test pad end to the connecting line section end at a distance. This protects the circuit and allows testing.
13. The substrate of claim 12 , wherein the electrostatic preventing pattern includes a pattern of alternating the first and second portions.
The display device substrate from the previous description features an electrostatic discharge (ESD) prevention pattern that alternates between wider and narrower sections. The electrostatic discharge (ESD) prevention pattern includes one or more first portions having a first width and one or more second portions having a second width narrower than the first width. The display device substrate includes a display cell with a pad and signal line connected to a pixel. A separate test pad extends from the display cell and connects to the signal line for error detection in data, gate, and storage lines. An electrostatic discharge (ESD) prevention pattern, made of metal with multiple edges, is near the test pad to reduce static charge. A connecting line links the ESD pattern to the display cell pad. A transparent electrode connects the test pad to the connecting line section, where the electrode links the test pad end to the connecting line section end at a distance. This protects the circuit and allows testing.
14. The substrate of claim 12 , wherein the first width is in a range of between about 30 μm and about 50 μm, and the second width is in a range of between about 5 μm and about 15 μm.
The display device substrate from the description of an electrostatic discharge (ESD) prevention pattern with alternating widths features wider sections (first portions) that range from 30 to 50 micrometers, and the narrower sections (second portions) that range from 5 to 15 micrometers. The electrostatic discharge (ESD) prevention pattern includes one or more first portions having a first width and one or more second portions having a second width narrower than the first width. The display device substrate includes a display cell with a pad and signal line connected to a pixel. A separate test pad extends from the display cell and connects to the signal line for error detection in data, gate, and storage lines. An electrostatic discharge (ESD) prevention pattern, made of metal with multiple edges, is near the test pad to reduce static charge. A connecting line links the ESD pattern to the display cell pad. A transparent electrode connects the test pad to the connecting line section, where the electrode links the test pad end to the connecting line section end at a distance. This protects the circuit and allows testing.
15. The substrate of claim 12 , wherein the second width is less than or equal to half of the first width.
The display device substrate includes an electrostatic discharge (ESD) prevention pattern where the narrower sections are half the width or less of the wider sections. The electrostatic discharge (ESD) prevention pattern includes one or more first portions having a first width and one or more second portions having a second width narrower than the first width. The display device substrate includes a display cell with a pad and signal line connected to a pixel. A separate test pad extends from the display cell and connects to the signal line for error detection in data, gate, and storage lines. An electrostatic discharge (ESD) prevention pattern, made of metal with multiple edges, is near the test pad to reduce static charge. A connecting line links the ESD pattern to the display cell pad. A transparent electrode connects the test pad to the connecting line section, where the electrode links the test pad end to the connecting line section end at a distance. This protects the circuit and allows testing.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
March 19, 2010
August 27, 2013
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